Echo is an interactive 3D mascot with a retro TV for a head. Try it: → Move your mouse and the TV head turns to follow you → Click to wake it up: "HI", a burst of static, then glowing eyes → Echo reads its greeting aloud while the caption types out word by word → Tap an "Ask Echo" pill (Who developed you? What can you do? How were you made?) and it answers out loud The whole thing is one HTML file, with no backend, build step or API key. The 3D model is embedded in the page, Three.js handles rendering and bloom, and the voice is the browser's built-in Web Speech API. Best on desktop Chrome or Edge with sound on. Edge on Windows has the most natural voice. Open source under MIT. Fork it and change what Echo says in a few lines.